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navik [9.2K]
3 years ago
7

CAN SOMEBODY PLEASE HELP ME ANSWER THIS CORRECTLY?! (There’s only one option per term, I just really need help and I would appre

ciate it)
~TERMS~
1. Theory
2. Controlled
3. Variables
4. Hypothesis
5. Independent
6. Quantitative

~DEFINITIONS~
A.) a variable that stays the same during an experiment.
B.) All the things that can be tested and/or observed in an experiment.
C.) An explanation that best explains observable facts, has been well tested and is widely accepted.
D.) describing something using your senses.
E.) summary explaining whether or not the hypothesis was supported by the experimental results.
F.) the variable that changed after doing the experiment.
G.) the variable you choose to test.
H.) Using numbers or amounts to describe something.
I.) your prediction on how the experiment will turn out.

(Answer like 1a or 2b.) (I need answers for all 6 terms) if you help me, thank you like alot

Chemistry
1 answer:
Jet001 [13]3 years ago
7 0

Answer:

1: C

2: A

3: B

4: I

5: G

6: H

Explanation:

Please don't crucify me if I'm wrong ;-;

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The water cycle would not be possible without ______ and ________.
ipn [44]

Answer:

I think it's 4

Explanation:

but I don't really remember the water cycle

4 0
3 years ago
Calculate the mass in grams of 24.5 mL of diethyl ether, an anesthetic that has a density of 0.713 g/mL. Round your answer to th
Contact [7]

Answer:

17.48

Explanation:

mass=density×volume

= 0.713g/ml × 24.5 ml

= 17.4685

≈ 17.47

6 0
3 years ago
What quantity is a scalar quantity? ​
KiRa [710]
Answer:

A scalar quantity is a quantity that includes both magnitude (the number) and a unit, but not direction.

An example of this is 5m.
5 0
3 years ago
Round 65.145 meters to 4 significant figures
nydimaria [60]
<span>145 * 10^4

There's your answer. Good luck my friend.</span>
4 0
4 years ago
An oxide of nitrogen is 25.9% N by mass, has a molar mass of 108 g/mol, and contains no nitrogen-nitrogen or oxygen-oxygen bonds
Sonja [21]

Answer:

The compound is N2O4

Explanation:

We have certain important pieces of information about the compound;

1) it is an oxide (a binary compound of nitrogen and oxygen)

2) there are no N-N bonds present

3) there are no O-O bonds present

Since it contains only nitrogen and oxygen then nitrogen accounts for 25.9% of the molecule by mass then oxygen should account for (100-25.9) = 74.1% oxygen

Relative atomic mass of oxygen = 16

Relative atomic mass of nitrogen = 14

We now deduce the empirical formula

Nitrogen. Oxygen

25.9/14. 74.1/16

1.85/1.85. 4.6/1.85 (divide through by the lowest ratio)

1 2

Empirical formula is NO2

To find the molecular formula

(NO2)n = 108

(14+2(16))n= 108

46n=108

n= 108/46

n= 2

Therefore molecular formula= N2O4

4 0
3 years ago
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